Is Portland hot in October?
Days are typically cool at 17.2°C, while nights average 8.9°C.
United States · 1991–2020 normal
Typical October weather in Portland: 17.2°C by day, 8.9°C at night, 100 mm of rain over 10.4 wet days. These are measured 1991–2020 station normals, not a forecast.
In the year-round weather comparison, October scores 51 out of 100 (September leads the year at 93). Daylight is calculated as 10 h 51 from latitude 45.52°.
October at a glance
Plain answers from the measured climate record—not a forecast or a promise about a particular trip.
Days are typically cool at 17.2°C, while nights average 8.9°C.
The measured monthly average is 100 mm across about 10 wet days.
There are about 10 h 51 between sunrise and sunset at mid-month, calculated from the place latitude.
October ranks 6 of 12 in our weather comparison; September ranks first.
The evidence behind this page
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The weather comparison for Portland is based on climate evidence, not payments from travel companies. Flight, accommodation and activity links will be clearly labelled when they are added; there are no booking offers on this page today.
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